Azilsartan Impurity 21

Chemical Name: 3-Hydroxy-2-oxobutyl 2-ethoxy-1-((2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)-[1,1'-biphenyl]-4-yl)methyl)-1H-benzo[d]imidazole-7-carboxylate

Synonym: Cyclobenzaprine HCl (USP) ; 3-(5H-Dibenzo[a,d][7]annulen-5-ylidene)-N,N-dimethylpropan-1-amine hydrochloride; Cyclobenzaprine HCl